Darla Holloway, a 4-year-old suffering from acute lymphoblastic leukemia, performed an inspiring rendition of the song during the seventh-inning stretch of the Red Sox-Orioles game.

Her performance was sponsored by the WEEI-NESN Jimmy Fund Radio Telethon that has raised more than $1 million for cancer care and research, according to Boston.com. The fund is a longtime associate of the Red Sox baseball team.

Although Darla has been undergoing chemotherapy treatments,
she said on WEEI’s Mut & Merloni that she had been practicing every day for her big performance.

Watch the emotional performance below.

11-Year-Old Prodigy: Boy Attends University, Will Have PhD By 20

11-year-old Carson Huey-You scored 1770 on the SAT, graduated with a 4.0 GPA and was co-valedictorian of his senior class at Accommodated Learning Academy in Grapevine. Now he's attending Texas Christian University and wants to become a quantum physicist. He's expected to graduate when he's 15 or 16. (Published Wednesday, Aug 28, 2013)